Arafat Islam

Portfolio:

I'm a developer who specializes in conversion rate optimization, not a marketer who dabbles in code, so the part I own is making experiments run on a real production site without flicker, broken single-page-app routing, or wrecked Core Web Vitals.

I've built experiments across every major testing platform: Optimizely, VWO, Convert, Adobe Target, Dynamic Yield, Monetate, Intelligems, AB Tasty, and Kameleoon. I write raw JavaScript and CSS per variation and handle the edge cases that quietly break client-side tests: elements that render late, React controlled inputs that won't hold a change, SPA route changes that stop a test from firing, and the accessibility most variants forget.

I've shipped tests for blue-chip brands, and I write up the trickiest bugs I solve at arafatcro.dev. If you need an experiment built right, shipped fast, and without breaking the page, send me the details and I'll tell you exactly how I'd approach it.